Add Missing Methods for Inbound Parse

[Cliftonz]

Some endpoints of the following section can't be hit from this SDK.

We would like to ensure that all endpoints can be hit. For this issue, we would like to build out the Inbound Parse

Some of these methods may already exist. 
If so no need to change/update them, just point out that they already exist and we will close the issue.

This is just to bring every SDK we have on par with all the methods available.

Check all the endpoints here and add the missing ones.

[ShatilKhan]

I'd like to work on this issue. Please assign it to me.

[sccalabr]

I could also work on this if needed

[sccalabr]

@Cliftonz @unicodeveloper can I pick this up?

[Cliftonz]

@sccalabr one the other issue is completed I would be happy to assign this to you.